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Temperature

  Avg High (°F) Avg Low (°F) Mean (°F) Heat Deg Day Cool Deg Day
County Data
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Hartford County, CT distance from county centroid to weather station: 5 mi
  Avg High (°F) Avg Low (°F) Mean (°F) Heat Deg Day Cool Deg Day
Jan 35.7 18.5 27.1 1175 0
Feb 39.3 21.6 30.5 967 0
Mar 47.5 28.9 38.2 831 0
Apr 59.8 39.5 49.6 466 5
May 70.2 49.0 59.6 202 35
Jun 79.1 58.6 68.8 36 152
Jul 83.9 64.3 74.1 3 285
Aug 82.3 62.8 72.6 7 241
Sep 74.7 54.0 64.4 99 80
Oct 63.1 41.8 52.4 396 7
Nov 52.2 34.6 43.4 648 0
Dec 40.7 24.2 32.5 1009 0
Tolland County, CT distance from county centroid to weather station: 11 mi
  Avg High (°F) Avg Low (°F) Mean (°F) Heat Deg Day Cool Deg Day
Jan 33.1 18.5 25.8 1215 0
Feb 36.9 21.6 29.2 1001 0
Mar 44.3 28.0 36.2 894 0
Apr 56.2 38.1 47.1 539 3
May 66.7 47.0 56.9 269 17
Jun 74.9 56.7 65.8 70 94
Jul 79.1 61.8 70.4 10 179
Aug 78.0 60.2 69.1 19 146
Sep 71.0 53.0 62.0 137 47
Oct 60.1 42.2 51.2 433 4
Nov 49.7 34.7 42.2 684 0
Dec 38.0 24.4 31.2 1048 0
Hampden County, MA distance from county centroid to weather station: 10 mi
  Avg High (°F) Avg Low (°F) Mean (°F) Heat Deg Day Cool Deg Day
Jan 32.9 12.9 22.9 1305 0
Feb 37.0 17.4 27.2 1058 0
Mar 45.9 25.1 35.5 914 0
Apr 59.1 35.4 47.2 538 6
May 70.5 45.5 58.0 243 26
Jun 78.0 54.7 66.3 62 102
Jul 82.8 59.0 70.9 10 193
Aug 81.5 58.5 70.0 18 173
Sep 74.0 49.8 61.9 137 44
Oct 61.6 38.2 49.9 472 4
Nov 49.4 30.0 39.7 759 0
Dec 38.2 21.0 29.6 1097 0

Temperature Extremes, Annual Number of Days

  Days
County Data
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Hartford County, CTdistance from county centroid to weather station: 5 mi
  Days
High > 90°F (Num. of Days) 12
Low < 32°F (Num. of Days) 118
Low < 0°F (Num. of Days) 2
Tolland County, CTdistance from county centroid to weather station: 11 mi
  Days
High > 90°F (Num. of Days) 2
Low < 32°F (Num. of Days) 118
Low < 0°F (Num. of Days) 2
Hampden County, MAdistance from county centroid to weather station: 10 mi
  Days
High > 90°F (Num. of Days) 11
Low < 32°F (Num. of Days) 147
Low < 0°F (Num. of Days) 7

Precipitation

  Precip Total " Snowfall Total " Days Precip ≥ 0.01" Days Precip ≥ 0.5" Days Snow Depth ≥ 10"
County Data
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Hartford County, CTdistance from county centroid to weather station: 5 mi
  Precip Total " Snowfall Total " Days Precip ≥ 0.01" Days Precip ≥ 0.5" Days Snow Depth ≥ 10"
Jan 4.0 N/A 9.5 3.2 N/A
Feb 3.6 N/A 9.3 2.2 N/A
Mar 4.5 N/A 9.7 3.1 N/A
Apr 5.0 N/A 10.3 3.0 N/A
May 5.0 N/A 10.3 3.3 N/A
Jun 5.4 N/A 9.0 2.9 N/A
Jul 5.3 N/A 8.9 3.3 N/A
Aug 5.2 N/A 8.9 3.1 N/A
Sep 4.8 N/A 8.3 2.7 N/A
Oct 5.8 N/A 7.8 3.2 N/A
Nov 5.2 N/A 8.6 3.7 N/A
Dec 4.6 N/A 9.5 2.8 N/A
Tolland County, CTdistance from county centroid to weather station: 11 mi
  Precip Total " Snowfall Total " Days Precip ≥ 0.01" Days Precip ≥ 0.5" Days Snow Depth ≥ 10"
Jan 3.8 8.1 9.7 2.4 N/A
Feb 3.3 11.1 8.9 2.5 N/A
Mar 4.4 5.5 9.9 3.0 N/A
Apr 4.5 1.1 10.6 2.8 N/A
May 4.0 0.0 12.2 2.4 N/A
Jun 4.5 0.0 11.1 2.5 N/A
Jul 3.9 0.0 10.4 2.6 N/A
Aug 3.8 0.0 9.2 2.9 N/A
Sep 4.1 0.0 9.1 2.8 N/A
Oct 4.6 0.0 9.5 3.0 N/A
Nov 4.6 0.9 9.9 3.3 N/A
Dec 4.2 6.7 9.8 3.0 N/A
Hampden County, MAdistance from county centroid to weather station: 7 mi
  Precip Total " Snowfall Total " Days Precip ≥ 0.01" Days Precip ≥ 0.5" Days Snow Depth ≥ 10"
Jan 3.2 N/A 7.6 2.3 N/A
Feb 2.9 N/A 7.3 2.0 N/A
Mar 3.5 N/A 8.5 2.3 N/A
Apr 3.6 N/A 8.9 2.5 N/A
May 4.3 N/A 10.3 2.9 N/A
Jun 4.1 N/A 9.7 2.8 N/A
Jul 3.9 N/A 7.6 2.5 N/A
Aug 3.7 N/A 7.7 2.6 N/A
Sep 4.1 N/A 7.7 2.6 N/A
Oct 4.5 N/A 8.1 2.7 N/A
Nov 3.8 N/A 8.2 2.9 N/A
Dec 3.4 N/A 8.2 2.1 N/A